Metallizing plant.



No. 797,222. v PATENTED AUG.15, 1905. A. R. PRITGHARD.

METALLIZING PLANT.

APPLIGATION FILED SEPTA. 1905.

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A. R. PRITGI'IARD.

METALLIZING PLANT.

APPLIUATION FILED sum, 1903.

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Jiiarzzeg gf No 797,222. PATENTED AUG. 15, 1905. A. R. PRITGHARD. METALLIZING PLANT.

APPLIUATION FILED SEPTA, 1903.

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METALLIZING PLANT.

APPLICATION FILED $31 14. 1903.

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Elpecification of Letters Patent.

Patented Aug. 15, 1905.

Application filed September 1, 1903. Serial No. 171,951.

To all whom, it may concern:

Be it known that I, ALBERT R. PRITOHARD, a citizen of the United States, and a resident of Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Metallizing Plants, of which the following is a specification.

This invention relates to improvements in metallizing plants; and it consists in the elements and combinations hereinafter set forth and claimed.

in the drawings, Figure 1 is a front view of a tinning plant embodying this invention, part being broken away and in section. Fig.

.2 is a rear view of the same device, part being broken away and in section. Fig. 3 is a central vertical section on the line 3 3 of Figs. 1 and 2. Fig. 4: is a horizontal section on the line 4: 1 of Figs. 1, 2, and 3. Fig. 5 is a vertical section on the line 5 5 of Figs. 1 and 1, and Fig. 6 is a vertical section on the line 6 6 of Figs. 1 and 1.

The frame of the device is of brick, having the chimney 1, the dome 2, and the operatingspace 3. On the front side said operatingspace is provided with a rolling or sliding curtain 4:, adapted to inclose the operatingspace above the kettles hereinafter to be mentioned. The curtain 1 may be operated by means of a roller-and-pulley mechanism 5, Fig. 3, actuated, if desired, by a chain 6 and provided with means whereby the curtain is held up as desired. The said means may embody a pin or hook 7 Fig. 3, upon which the chain 6 may engage in order to hold the curtain at any desired height. The pin or hook may carry at its end 8 a link of fusible metal, so that if by any mishap, such as the breakage of a kettle, a fire should start in the operating-space 3 the fusible link 8 would melt and the curtain 4: would descend by its own gravity, and thus automatically inclose the operating-space when the temperature there in rises to a predetermined limit. Except when said fusible link is heated the curtain is supported upon the pin 7 which has sulficient strength to support the weight of the curtain 4:.

Below the operating-space 3 are a series of kettles, which in a complete retinning device are a battery of foura soaking-kettle 9, a metal kettle 10, a finishing-kettle 11, and a listing-kettle 12. It is unnecessary to describe the funetions and uses of each of these It will be enough to say that each kettles.

kettle is heated by its own fire and each fire has a connection to a chimney or stack 1.

The operating-space 3 1S accessible from the front through the operating-space, and in Y order to clean the fire-spaces a series of fines 13, each provided with a door 01' cap 14:, is made from the front into the upper parts of the fire-spaces around the kettles.

At the back of the apparatus fire-doors l5 and ash-doors 16 are provided into the the space above and below the grates 17.

The kettles are so hung as to stand over the grates and in the fire-spaces 18.

A common flue 19 to the chimney 1 extends to the lire-spaee 18 of each kettle, thus making it possible to regulate each fire independently as circumstances might require.

The rear wall 20, with the kettles and the walls 21 for supporting the kettles, constitutes a continuous partition in the furnace between the lire-space and the operating-space in front of the wall. By means of chains 22, extending from the fire-doors into the operatingspace, the fire may be regulated by the operator.

In tinning and retinning plants grease is employed in the kettles in order to coat and to keep clean the surface of the metal, and heretofore fires were of constant and frequent occurrence in plants of this character because the hot grease or the fumes therefrom would catch fire from the fire on the grate. In fact. in plants of this character the burning down of the plant was expected at intervals, and insurance premiums upon such plants were extremely high, and risks on such plants were refused by many insurance companies. The plants as heretofore constructed had the fire and ash doors 15 and 16 on the front of the apparatus on the same side as the dipping or operating space, so that there was no constant partition or division between the fire and the grease fumes or the grease that boiled over. In the present invention it will be noticed that the lire-space is entirely cutoff from the operatingspace, into which the grease may sputter or fume, and that without the breaking of the kettle it is impossible for the fire on any grate 17 to reach the grease in any of the kettles.

in plants that have been constructed here tcfore the operators who dip the articles into the kettles are directly over the stoking-doors, standing on a platform above such doors, and these operators suffer from the heat and fumes that ariseto them. By the present invention,

the fire being entirely out off from the grease in the kettles on account of the operatingspace being on one side of the apparatus and the fire and ash doors being on the other side V of the apparatus, the fire-space is separated absolutely from the operating-space by solid partitions consisting of brick and of the kettles, and the fire risk is reduced to a minimum and except in case of the breakage of the apparatus absolutely prevented.

WVhat I claim is' 1. In a metallizing plant, a furnace having a fire-space, a fire-door therefor, an open kettle containing inflammable material, an operating-space over the kettle; and a continuous partition between said fire-space and said operating-space, including a wall extending inwardly above said fire-space, the fire-door facing rearwardly, and the operating-space facing frontward'ly, whereby the fire-door and the operating-space are cut off from each other.

2. In a metallizing plant, a furnace having a rear wall, a fire-space continuing through said wall, and having a fire-door in the rear side of said wall, an open kettle containing inflammable material, an operating-space over the kettle in front of said wall, whereby the space in which the fire-door opens and the operatin -space are completely cut off from each other.

3. In a metallizing plant, a furnace having a rear wall, a fire-space continuing through said Wall, and having a fire-door in the rear side of said Wall, an open kettle containing inflammable material, an operating-space over said kettle in front of said wall, whereby the space in which the fire-door opens, and the operating-space are completely out off from each other, and a curtain for closing said operating-space above the kettle.

4. In a metallizing plant, a furnace having a fire-space and an oiftake-flue, a fire-door at the rear of the fire-space, a hood over the furnace having a closed rear wall over the firedoor, and open at its front for the operator, an offtake communicating with the top of the hood, and a kettle mounted in the furnace with its upper open end in the operating-space.

5. A metallizing plant comprising a furnace having a closed front wall, independent fire-spaces having fire-doors through the rear Wall of the furnace, and a common oiftake-flue for said fire-spaces, kettles in the fire-spaces, a hood 'over the furnace having a closed rear wall above the firedoors and open at its front for the operator to gain access to the kettles, and an offtake for the hood.

6. In a metallizing plant a furnace having a rear wall, a fire-space continuing through said Wall to the rear thereof, a kettle and an operating-space thereover in front of said Wall, said furnace having a continuous partition between said fire-space and said operatingspace, and means for automatically closing said operating-space above the kettle when the temperature in said operating-space rises to a predetermined limit.

7. In a metallizing plant a furnace having a rear wall, a fire-space continuing through said wall to the rear thereof, a kettle and an operating-space thereover in front of said wall, said furnace having a continuous partition between said fire-space and said operatingspace, and a curtain for inclosing said operating-space above the kettle, and means for automatically moving said curtain to inclose said space when the temperature in said operating-space rises to a predetermined limit.

ALBERT R. PRITCHARD.

WVitnesses:

I. B. BUTLER, D. Gunman. 

